Dan Trujillo, left, and Clyde Peck get married as about 1,500 people gather to show support of marriage equality after a federal judge declined to stay his ruling that legalized same-sex marriage in Utah, at Washington Square, just outside of the Salt Lake City and County Building Monday, Dec. 23, 2013, in Salt Lake City. (AP Photo/The Deseret News, Tom Smart)

In this Feb. 17, 2012 file photo, Rep. Maggie McIntosh, D-Baltimore
City, gives a thumbs up to spectators in a balcony above the House floor
after members of the Maryland House of Delegates passed a gay marriage
bill in Annapolis, Md. Voters signed off on the bill on Tuesday.

Heidi Henninger, left, and her sons, Zack, 7, and Nate, 9, show their support for gay marriage at a rally in downtown Portland, Maine, Thursday, Nov. 1, 2012, in a final campaign push before Tuesday's vote on a same-sex marriage referendum. Voters decided Tuesday to allow gay marriage in the state. (AP Photo/Robert F. Bukaty)

Revelers display U.S. and gay pride flags as they celebrate early
election returns favoring Washington state Referendum 74, which was approved by voters and legalizes gay marriage, during a large impromptu street gathering in
Seattle's Capitol Hill neighborhood, in the early hours of Wednesday,
Nov. 7, 2012.

Gay marriage advocate Beth Robinson, center, holds back tears following
the passage of a gay marriage bill in Montpelier, Vt., Tuesday, April 7,
2009. Vermont was the fourth state to legalize gay marriage.

Brandon Brock wears a shirt commemorating his marriage to his partner in New York City during a rally celebrating Obama's announcement that he supports gay marriage at the San Francisco Lesbian Gay Bisexual Transgender Community Center in San Francisco, Calif., May 9, 2012.
Jason Henry/Special to The Chronicle

In this May 17, 2005, file photo, Julie, front left, and Hillary Goodridge pose with other gay couples and supporters as they celebrate their first wedding anniversary in Boston. The couple led the legal fight for Massachusetts to become the first state to legalize same-sex marriages.

David Wise, left, and Sean Casey of Coralville, Iowa embrace after filing to receive a marriage license Monday, April 27, 2009 at the Johnson County Administration Building in Iowa City, Iowa. It was the first day same sex couples were able to file for marriage licenses in Iowa. (AP Photo/The Gazette, Brian Ray)

Robbin Levine-Ritterman waves her marriage license at City Hall in New Haven, Conn. Wednesday Nov. 12, 2008 with her partner Barbara Levine-Rittermanin, background. The two were among the first gay couples to receive marriage licenses in Connecticut that day after a New Haven judge cleared the way for gay marriage in the state.

Former New Jersey Gov. Jon Corzine, center, surrounded by state legislators and gay rights advocates, holds up the civil unions legislation he just signed during a ceremony in Trenton, N.J., Thursday, Dec. 21, 2006. The New Jersey legislature approved a freedom to marry bill in 2012, but it was vetoed by Gov. Chris Christie. There is a movement under way to override the veto, according to freedomtomarry.org.

From right, Suzanne King, Shylar Young, 9 and Tambry Young all of Honolulu walk along the shore at Ala Moana Park in Honolulu, Hawaii, Thursday, Feb. 19, 2009. A civil unions measure presented in 2009 did not pass, but the state later passed a similar bill that took effect on Jan. 1, 2012.

David Peters, right, and Luke Whited, a gay couple who are joined in a civil union in their home state of Illinois, pose for the camera prior to being interviewed about President Obama's statement of support of gay marriage, in New Orleans, Wednesday, May 9, 2012. (AP Photo/Gerald Herbert)

In this Tuesday, Feb. 9, 2010 file photo, Rhode Island House Majority Leader Gordon Fox, D-Providence, center, speaks with fellow lawmakers during a session in the House Chamber, at the Statehouse, in Providence, R.I. Gay marriage advocates said this week that they plan to push for marriage legislation next year.

James Walker places a ring on his partner, Michael Palmer, while trading vows under the direction of Rev. David Gant, center, Friday afternoon, Feb. 20, 2004, in the back of the Sandoval County Court House in Bernalillo, N.M. Sandoval County started issuing marriage licenses to same sex couples that morning after the county's attorney deemed that New Mexico law was not clear and that refusing to issue the licenses to same-sex couples could open the county to legal liability. The New Mexico attorney general quickly put a stop to the issuance of marriage licenses in the state, but New Mexico still recognizes same-sex marriages from out of state.

Eduardo Cisneros (L) and Luke Montgomery kiss in front of a Chick-fil-A fast food restaurant in Hollywood as Christian activist Alicia Daberkow reads passages from the Bible in this August 3, 2012 file photo in Hollywood, California.

Steven Hansen, left, kisses his fiancee, Rick Raymen, as they stand in a line near the Multnomah Building to receive a marriage license Wednesday, March 3, 2004, in Portland, Ore. County officials had issued dozens of licenses to gay couples after deciding that Oregon law allowed the unions. The Oregon Supreme Court voided all same-sex marriage licenses in April 2005.

Newly-elected Wisconsin Sen. Tammy Baldwin, bottom right, who was a state representative when this photo was taken, drew cheers at a rally prior to an annual Gay Pride Parade in Madison, Wis., Sunday, July 19, 1998. Baldwin made history Tuesday when she became the first openly-gay politician to be elected to the U.S. Senate. She's also the first female Wisconsin senator.